On a quick note that I failed to mention, you will also need to train the plants to the side. This will help ensure dense buds because the light won't need to get through as much canopy.
After a 2 week veg you can have a pretty decent size bush, and over the first 2 weeks of flowering during the stretch period before flowers appear you can have 2 huge bushes.
An yea, you could have 400g+...
-EllisDee25